Improvement in machine for producing cores



anaal gaat@ wwf one.

.sp1 PEEr, orv NEW YORK, N. Y'.

Letters Patent N 1Q0,32-0dated March 1, 1870; antedated February 16, 1870.

IMPROVEMENT IN MACHINE FOR PRO-DUCING CORES.

` The Schedule referred to in these Letters Patentfand making part at the same.

Io'all whom it may concern:

Be it known that LS. J. PEET, of the cit-y, county,

and State of New York, have invented a new and' improved Machine for Producing Cores; and I do hereby had to the accompanying drawing forming-part of this specification, in which drawing- Figure 1 represents a transverse vertical section of this invention, when the machine is in position to receive the sand.

Figure 2 is a horizontal section of the same.

Figure 3 is a transverse vertical section of the same, when thenrachine is in position to discharge the finished cores.

Similar' letters indicate corresponding parts.

This invention relates to a machine for making such cores which have to be molded in halves, said machine being composed of two semi-core plates, which are hinged to slides receiving a reciprocating motion toward and from eachother bya screw-spindle, with a riglrtfand-leftbandedthread, or any other equivalent means. The semi-core plates are charged with sand through funnel-sliaped hopper's, and the sand is stamped down bysuitable rams or stamps. vAfter the semi-cores are finished the semi-core plates are turned upso that they face each other, and the semi-cores are united by moving the semi-core plates close together'. The finished cores are then loosened by rapping the core-boxes with suitable automatic hammers, and by separating the semi-core plates the cores are deposited upon a movable plate, which, being loose, can be readily removed, together with the iinished cores, to the oven.

In the drawings- The letter A designates the pillars, standards, or posts which form the supports for the different parts ofmy machine. f

On these posts rests the platform ortable B, which is grooved out to form guide-ways for two slides, C C, to which `a reciprocatingmotion toward and from each other may be imparted by means of a screw-spindle,

vD, with a riglrt-and-left-handed thread;

The slides C C form the supports for the semi-core plates E E, which are connected to the same in l such a manner that they can be turned up from a horizontal to a vertical position, and nice versa, and ca ch ot' which contains a series of semiecore boxes, best seen in fig. 2 ofthe drawing. v

'lhese semi-core boxes are supplied with sand through hopper-plates L L, each ot which contains a number of funnel-shaped apertures or hoppers corresponding in shape and position to the semi-core boxes, and the sand is rammed down into the hoppers and vsemi-core boxes by means of a series of rams or stamps, M M, which are secured to a cross-heador follower, N, to

which a rising and' falling motion is imparted by theaction of a crank-shaft,'ltfthe cranks of which connect with said follower by rods or pitmen, and which receives a revolving motion by a belt, gear-wheels, crank, lever, or any other simple device.

When each box is properly filled with sand the stamps MM are brought down with a force which may be regulated by a gauge, so that -it shallv always be uniform without depending upon the judgment of the operaton When the cores are thus prepared the surplus sand in the hoppers is shoved oit' from the semi-core' boxes, by a single motion on the movable plate J,

vwhich being laid loose on the table, is removed with the sand.

After disposing of the surplus sand the movable plate J is replaced, the core-plates E E are turned up to a vertical position,l which brings eachhalt of each core exactly facing its counterpart, when, by the operation ofthe screw-spindle D, they are brought firmly together, and held until they adhere, and tiren, by a few raps on the boxes, the safnd is liberated, and -by moving the core-plates gently apart the iinished cores are deposited upon the movable plate J, onwhich they are conveniently carried to the overl.

The raps on the core-boxes are produced by a-serie's of hammers, H, which are suspended from the shaft R, and to which the required motion is imparted by.

a series of tappet arms, a, extending from shaftsG, which have their bearings in suitable boxes secured to the slides C, and to which the required motion is imparted by hand or any otherv suitable power. By -this arrangement all the core-boxes are rapped simultaneously, and the power'of the blows can be easily regulated by increasing or Adecreasing the stroke of the hammers or their weight, or, if desired, the power of the blows rnaybe regulated by suitable gearings.

By this arrangement a machine is produced which enables nre to produce a large quantity of cores by the aid of children or nnpracticed operators.

Having thus described my invention,

What I claim as new, and desire to secure by Let# ters Patent, is-

1. The slides C C, receiving a reciprocating motion in opposite directions, and carrying the semi-core plates E E, substantially as shown and described.

2. The combination of slides C C, core-plates E E, lropper-plates L L, plate J, and rams M M, subst-antially as described.

3; 'lhe arrangement with the above of the automatic hammers H, substantially as described.l

This specification signed by me this 17th day of 

